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java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Unable to merge dex in Android Studio 3.0 [closed]

This is my app level gradle file:

    apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion '27.0.0'
    useLibrary 'org.apache.http.legacy'
    defaultConfig {
        multiDexEnabled true
        applicationId 'com.example.test'
        minSdkVersion 16
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    productFlavors {
    }
    dexOptions {
        incremental true
    }
}

dependencies {
    compile 'com.google.android.gms:play-services:10.0.1'
    compile 'com.android.support:appcompat-v7:26.+'
    compile 'com.android.support:multidex:1.0.1'
    compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha7'
    compile 'commons-io:commons-io:1.3.2'
    compile 'com.mcxiaoke.volley:library:1.0.19'
    compile 'com.facebook.stetho:stetho:1.5.0'
    compile 'com.github.PhilJay:MPAndroidChart:v3.0.2'
}

The complete error I get when compiling the project is:

Error:Execution failed for task ‘:app:transformDexArchiveWithExternalLibsDexMergerForDebug’.

java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Unable to merge dex

The complete error is as follows:

    Executing tasks: [:app:assembleDebug]

AGPBI: {"kind":"warning","text":"The `android.dexOptions.incremental` property is deprecated and it has no effect on the build process.","sources":[{},{}]}
Configuration 'compile' in project ':app' is deprecated. Use 'implementation' instead.
:app:buildInfoDebugLoader
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:compileDebugAidl UP-TO-DATE
:app:compileDebugRenderscript UP-TO-DATE
:app:checkDebugManifest UP-TO-DATE
:app:generateDebugBuildConfig UP-TO-DATE
:app:prepareLintJar UP-TO-DATE
:app:generateDebugResValues UP-TO-DATE
:app:generateDebugResources UP-TO-DATE
:app:mergeDebugResources UP-TO-DATE
:app:createDebugCompatibleScreenManifests UP-TO-DATE
:app:processDebugManifest UP-TO-DATE
:app:splitsDiscoveryTaskDebug UP-TO-DATE
:app:processDebugResources UP-TO-DATE
:app:generateDebugSources
:app:javaPreCompileDebug UP-TO-DATE
:app:compileDebugJavaWithJavac UP-TO-DATE
:app:mergeDebugShaders UP-TO-DATE
:app:compileDebugShaders UP-TO-DATE
:app:generateDebugAssets UP-TO-DATE
:app:mergeDebugAssets UP-TO-DATE
:app:packageInstantRunResourcesDebug UP-TO-DATE
:app:checkManifestChangesDebug
:app:extractTryWithResourcesSupportJarDebug UP-TO-DATE
:app:transformClassesWithStackFramesFixerForDebug UP-TO-DATE
:app:transformClassesWithDesugarForDebug UP-TO-DATE
:app:transformClassesWithExtractJarsForDebug UP-TO-DATE
:app:transformClassesWithInstantRunVerifierForDebug UP-TO-DATE
:app:transformClassesWithDependencyCheckerForDebug UP-TO-DATE
:app:compileDebugNdk NO-SOURCE
:app:mergeDebugJniLibFolders UP-TO-DATE
:app:transformNativeLibsWithMergeJniLibsForDebug UP-TO-DATE
:app:processDebugJavaRes NO-SOURCE
:app:transformResourcesWithMergeJavaResForDebug UP-TO-DATE
:app:transformNativeLibsAndResourcesWithJavaResourcesVerifierForDebug UP-TO-DATE
:app:transformClassesWithInstantRunForDebug UP-TO-DATE
:app:transformClassesEnhancedWithInstantReloadDexForDebug UP-TO-DATE
:app:incrementalDebugTasks UP-TO-DATE
:app:preColdswapDebug
:app:fastDeployDebugExtractor UP-TO-DATE
:app:generateDebugInstantRunAppInfo UP-TO-DATE
:app:transformClassesWithInstantRunSlicerForDebug UP-TO-DATE
:app:transformClassesWithDexBuilderForDebug UP-TO-DATE
:app:transformDexArchiveWithExternalLibsDexMergerForDebug FAILED
:app:buildInfoGeneratorDebug

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'.
> java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Unable to merge dex

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

* Get more help at https://help.gradle.org

BUILD FAILED in 2s

39 actionable tasks: 5 executed, 34 up-to-date

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Answer

Enable Multidex through build.gradle of your app module

multiDexEnabled true

Same as below –

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "com.xx.xxx"
        minSdkVersion 15
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        multiDexEnabled true //Add this
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            shrinkResources true
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

Then follow below steps –

  1. From the Build menu -> press the Clean Project button.
  2. When task completed, press the Rebuild Project button from the Build menu.
  3. From menu File -> Invalidate cashes / Restart

compile is now deprecated so it’s better to use implementation or api

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